<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html lang="en">
<head>
<title>Source code</title>
<link rel="stylesheet" type="text/css" href="../../../../../stylesheet.css" title="Style">
</head>
<body>
<div class="sourceContainer">
<pre><span class="sourceLineNo">001</span>/*<a name="line.1"></a>
<span class="sourceLineNo">002</span> * Copyright (C) 2007 The Guava Authors<a name="line.2"></a>
<span class="sourceLineNo">003</span> *<a name="line.3"></a>
<span class="sourceLineNo">004</span> * Licensed under the Apache License, Version 2.0 (the "License");<a name="line.4"></a>
<span class="sourceLineNo">005</span> * you may not use this file except in compliance with the License.<a name="line.5"></a>
<span class="sourceLineNo">006</span> * You may obtain a copy of the License at<a name="line.6"></a>
<span class="sourceLineNo">007</span> *<a name="line.7"></a>
<span class="sourceLineNo">008</span> * http://www.apache.org/licenses/LICENSE-2.0<a name="line.8"></a>
<span class="sourceLineNo">009</span> *<a name="line.9"></a>
<span class="sourceLineNo">010</span> * Unless required by applicable law or agreed to in writing, software<a name="line.10"></a>
<span class="sourceLineNo">011</span> * distributed under the License is distributed on an "AS IS" BASIS,<a name="line.11"></a>
<span class="sourceLineNo">012</span> * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.<a name="line.12"></a>
<span class="sourceLineNo">013</span> * See the License for the specific language governing permissions and<a name="line.13"></a>
<span class="sourceLineNo">014</span> * limitations under the License.<a name="line.14"></a>
<span class="sourceLineNo">015</span> */<a name="line.15"></a>
<span class="sourceLineNo">016</span><a name="line.16"></a>
<span class="sourceLineNo">017</span>package com.google.common.base;<a name="line.17"></a>
<span class="sourceLineNo">018</span><a name="line.18"></a>
<span class="sourceLineNo">019</span>import static com.google.common.base.Preconditions.checkNotNull;<a name="line.19"></a>
<span class="sourceLineNo">020</span><a name="line.20"></a>
<span class="sourceLineNo">021</span>import com.google.common.annotations.Beta;<a name="line.21"></a>
<span class="sourceLineNo">022</span>import com.google.common.annotations.GwtCompatible;<a name="line.22"></a>
<span class="sourceLineNo">023</span>import com.google.common.annotations.GwtIncompatible;<a name="line.23"></a>
<span class="sourceLineNo">024</span><a name="line.24"></a>
<span class="sourceLineNo">025</span>import java.io.Serializable;<a name="line.25"></a>
<span class="sourceLineNo">026</span>import java.util.ArrayList;<a name="line.26"></a>
<span class="sourceLineNo">027</span>import java.util.Arrays;<a name="line.27"></a>
<span class="sourceLineNo">028</span>import java.util.Collection;<a name="line.28"></a>
<span class="sourceLineNo">029</span>import java.util.List;<a name="line.29"></a>
<span class="sourceLineNo">030</span>import java.util.regex.Pattern;<a name="line.30"></a>
<span class="sourceLineNo">031</span><a name="line.31"></a>
<span class="sourceLineNo">032</span>import javax.annotation.Nullable;<a name="line.32"></a>
<span class="sourceLineNo">033</span><a name="line.33"></a>
<span class="sourceLineNo">034</span>/**<a name="line.34"></a>
<span class="sourceLineNo">035</span> * Static utility methods pertaining to {@code Predicate} instances.<a name="line.35"></a>
<span class="sourceLineNo">036</span> *<a name="line.36"></a>
<span class="sourceLineNo">037</span> * &lt;p&gt;All methods returns serializable predicates as long as they're given<a name="line.37"></a>
<span class="sourceLineNo">038</span> * serializable parameters.<a name="line.38"></a>
<span class="sourceLineNo">039</span> *<a name="line.39"></a>
<span class="sourceLineNo">040</span> * &lt;p&gt;See the Guava User Guide article on &lt;a href=<a name="line.40"></a>
<span class="sourceLineNo">041</span> * "http://code.google.com/p/guava-libraries/wiki/FunctionalExplained"&gt;the<a name="line.41"></a>
<span class="sourceLineNo">042</span> * use of {@code Predicate}&lt;/a&gt;.<a name="line.42"></a>
<span class="sourceLineNo">043</span> *<a name="line.43"></a>
<span class="sourceLineNo">044</span> * @author Kevin Bourrillion<a name="line.44"></a>
<span class="sourceLineNo">045</span> * @since 2.0 (imported from Google Collections Library)<a name="line.45"></a>
<span class="sourceLineNo">046</span> */<a name="line.46"></a>
<span class="sourceLineNo">047</span>@GwtCompatible(emulated = true)<a name="line.47"></a>
<span class="sourceLineNo">048</span>public final class Predicates {<a name="line.48"></a>
<span class="sourceLineNo">049</span>  private Predicates() {}<a name="line.49"></a>
<span class="sourceLineNo">050</span><a name="line.50"></a>
<span class="sourceLineNo">051</span>  // TODO(kevinb): considering having these implement a VisitablePredicate<a name="line.51"></a>
<span class="sourceLineNo">052</span>  // interface which specifies an accept(PredicateVisitor) method.<a name="line.52"></a>
<span class="sourceLineNo">053</span><a name="line.53"></a>
<span class="sourceLineNo">054</span>  /**<a name="line.54"></a>
<span class="sourceLineNo">055</span>   * Returns a predicate that always evaluates to {@code true}.<a name="line.55"></a>
<span class="sourceLineNo">056</span>   */<a name="line.56"></a>
<span class="sourceLineNo">057</span>  @GwtCompatible(serializable = true)<a name="line.57"></a>
<span class="sourceLineNo">058</span>  public static &lt;T&gt; Predicate&lt;T&gt; alwaysTrue() {<a name="line.58"></a>
<span class="sourceLineNo">059</span>    return ObjectPredicate.ALWAYS_TRUE.withNarrowedType();<a name="line.59"></a>
<span class="sourceLineNo">060</span>  }<a name="line.60"></a>
<span class="sourceLineNo">061</span><a name="line.61"></a>
<span class="sourceLineNo">062</span>  /**<a name="line.62"></a>
<span class="sourceLineNo">063</span>   * Returns a predicate that always evaluates to {@code false}.<a name="line.63"></a>
<span class="sourceLineNo">064</span>   */<a name="line.64"></a>
<span class="sourceLineNo">065</span>  @GwtCompatible(serializable = true)<a name="line.65"></a>
<span class="sourceLineNo">066</span>  public static &lt;T&gt; Predicate&lt;T&gt; alwaysFalse() {<a name="line.66"></a>
<span class="sourceLineNo">067</span>    return ObjectPredicate.ALWAYS_FALSE.withNarrowedType();<a name="line.67"></a>
<span class="sourceLineNo">068</span>  }<a name="line.68"></a>
<span class="sourceLineNo">069</span><a name="line.69"></a>
<span class="sourceLineNo">070</span>  /**<a name="line.70"></a>
<span class="sourceLineNo">071</span>   * Returns a predicate that evaluates to {@code true} if the object reference<a name="line.71"></a>
<span class="sourceLineNo">072</span>   * being tested is null.<a name="line.72"></a>
<span class="sourceLineNo">073</span>   */<a name="line.73"></a>
<span class="sourceLineNo">074</span>  @GwtCompatible(serializable = true)<a name="line.74"></a>
<span class="sourceLineNo">075</span>  public static &lt;T&gt; Predicate&lt;T&gt; isNull() {<a name="line.75"></a>
<span class="sourceLineNo">076</span>    return ObjectPredicate.IS_NULL.withNarrowedType();<a name="line.76"></a>
<span class="sourceLineNo">077</span>  }<a name="line.77"></a>
<span class="sourceLineNo">078</span><a name="line.78"></a>
<span class="sourceLineNo">079</span>  /**<a name="line.79"></a>
<span class="sourceLineNo">080</span>   * Returns a predicate that evaluates to {@code true} if the object reference<a name="line.80"></a>
<span class="sourceLineNo">081</span>   * being tested is not null.<a name="line.81"></a>
<span class="sourceLineNo">082</span>   */<a name="line.82"></a>
<span class="sourceLineNo">083</span>  @GwtCompatible(serializable = true)<a name="line.83"></a>
<span class="sourceLineNo">084</span>  public static &lt;T&gt; Predicate&lt;T&gt; notNull() {<a name="line.84"></a>
<span class="sourceLineNo">085</span>    return ObjectPredicate.NOT_NULL.withNarrowedType();<a name="line.85"></a>
<span class="sourceLineNo">086</span>  }<a name="line.86"></a>
<span class="sourceLineNo">087</span><a name="line.87"></a>
<span class="sourceLineNo">088</span>  /**<a name="line.88"></a>
<span class="sourceLineNo">089</span>   * Returns a predicate that evaluates to {@code true} if the given predicate<a name="line.89"></a>
<span class="sourceLineNo">090</span>   * evaluates to {@code false}.<a name="line.90"></a>
<span class="sourceLineNo">091</span>   */<a name="line.91"></a>
<span class="sourceLineNo">092</span>  public static &lt;T&gt; Predicate&lt;T&gt; not(Predicate&lt;T&gt; predicate) {<a name="line.92"></a>
<span class="sourceLineNo">093</span>    return new NotPredicate&lt;T&gt;(predicate);<a name="line.93"></a>
<span class="sourceLineNo">094</span>  }<a name="line.94"></a>
<span class="sourceLineNo">095</span><a name="line.95"></a>
<span class="sourceLineNo">096</span>  /**<a name="line.96"></a>
<span class="sourceLineNo">097</span>   * Returns a predicate that evaluates to {@code true} if each of its<a name="line.97"></a>
<span class="sourceLineNo">098</span>   * components evaluates to {@code true}. The components are evaluated in<a name="line.98"></a>
<span class="sourceLineNo">099</span>   * order, and evaluation will be "short-circuited" as soon as a false<a name="line.99"></a>
<span class="sourceLineNo">100</span>   * predicate is found. It defensively copies the iterable passed in, so future<a name="line.100"></a>
<span class="sourceLineNo">101</span>   * changes to it won't alter the behavior of this predicate. If {@code<a name="line.101"></a>
<span class="sourceLineNo">102</span>   * components} is empty, the returned predicate will always evaluate to {@code<a name="line.102"></a>
<span class="sourceLineNo">103</span>   * true}.<a name="line.103"></a>
<span class="sourceLineNo">104</span>   */<a name="line.104"></a>
<span class="sourceLineNo">105</span>  public static &lt;T&gt; Predicate&lt;T&gt; and(<a name="line.105"></a>
<span class="sourceLineNo">106</span>      Iterable&lt;? extends Predicate&lt;? super T&gt;&gt; components) {<a name="line.106"></a>
<span class="sourceLineNo">107</span>    return new AndPredicate&lt;T&gt;(defensiveCopy(components));<a name="line.107"></a>
<span class="sourceLineNo">108</span>  }<a name="line.108"></a>
<span class="sourceLineNo">109</span><a name="line.109"></a>
<span class="sourceLineNo">110</span>  /**<a name="line.110"></a>
<span class="sourceLineNo">111</span>   * Returns a predicate that evaluates to {@code true} if each of its<a name="line.111"></a>
<span class="sourceLineNo">112</span>   * components evaluates to {@code true}. The components are evaluated in<a name="line.112"></a>
<span class="sourceLineNo">113</span>   * order, and evaluation will be "short-circuited" as soon as a false<a name="line.113"></a>
<span class="sourceLineNo">114</span>   * predicate is found. It defensively copies the array passed in, so future<a name="line.114"></a>
<span class="sourceLineNo">115</span>   * changes to it won't alter the behavior of this predicate. If {@code<a name="line.115"></a>
<span class="sourceLineNo">116</span>   * components} is empty, the returned predicate will always evaluate to {@code<a name="line.116"></a>
<span class="sourceLineNo">117</span>   * true}.<a name="line.117"></a>
<span class="sourceLineNo">118</span>   */<a name="line.118"></a>
<span class="sourceLineNo">119</span>  public static &lt;T&gt; Predicate&lt;T&gt; and(Predicate&lt;? super T&gt;... components) {<a name="line.119"></a>
<span class="sourceLineNo">120</span>    return new AndPredicate&lt;T&gt;(defensiveCopy(components));<a name="line.120"></a>
<span class="sourceLineNo">121</span>  }<a name="line.121"></a>
<span class="sourceLineNo">122</span><a name="line.122"></a>
<span class="sourceLineNo">123</span>  /**<a name="line.123"></a>
<span class="sourceLineNo">124</span>   * Returns a predicate that evaluates to {@code true} if both of its<a name="line.124"></a>
<span class="sourceLineNo">125</span>   * components evaluate to {@code true}. The components are evaluated in<a name="line.125"></a>
<span class="sourceLineNo">126</span>   * order, and evaluation will be "short-circuited" as soon as a false<a name="line.126"></a>
<span class="sourceLineNo">127</span>   * predicate is found.<a name="line.127"></a>
<span class="sourceLineNo">128</span>   */<a name="line.128"></a>
<span class="sourceLineNo">129</span>  public static &lt;T&gt; Predicate&lt;T&gt; and(Predicate&lt;? super T&gt; first,<a name="line.129"></a>
<span class="sourceLineNo">130</span>      Predicate&lt;? super T&gt; second) {<a name="line.130"></a>
<span class="sourceLineNo">131</span>    return new AndPredicate&lt;T&gt;(Predicates.&lt;T&gt;asList(<a name="line.131"></a>
<span class="sourceLineNo">132</span>        checkNotNull(first), checkNotNull(second)));<a name="line.132"></a>
<span class="sourceLineNo">133</span>  }<a name="line.133"></a>
<span class="sourceLineNo">134</span><a name="line.134"></a>
<span class="sourceLineNo">135</span>  /**<a name="line.135"></a>
<span class="sourceLineNo">136</span>   * Returns a predicate that evaluates to {@code true} if any one of its<a name="line.136"></a>
<span class="sourceLineNo">137</span>   * components evaluates to {@code true}. The components are evaluated in<a name="line.137"></a>
<span class="sourceLineNo">138</span>   * order, and evaluation will be "short-circuited" as soon as a<a name="line.138"></a>
<span class="sourceLineNo">139</span>   * true predicate is found. It defensively copies the iterable passed in, so<a name="line.139"></a>
<span class="sourceLineNo">140</span>   * future changes to it won't alter the behavior of this predicate. If {@code<a name="line.140"></a>
<span class="sourceLineNo">141</span>   * components} is empty, the returned predicate will always evaluate to {@code<a name="line.141"></a>
<span class="sourceLineNo">142</span>   * false}.<a name="line.142"></a>
<span class="sourceLineNo">143</span>   */<a name="line.143"></a>
<span class="sourceLineNo">144</span>  public static &lt;T&gt; Predicate&lt;T&gt; or(<a name="line.144"></a>
<span class="sourceLineNo">145</span>      Iterable&lt;? extends Predicate&lt;? super T&gt;&gt; components) {<a name="line.145"></a>
<span class="sourceLineNo">146</span>    return new OrPredicate&lt;T&gt;(defensiveCopy(components));<a name="line.146"></a>
<span class="sourceLineNo">147</span>  }<a name="line.147"></a>
<span class="sourceLineNo">148</span><a name="line.148"></a>
<span class="sourceLineNo">149</span>  /**<a name="line.149"></a>
<span class="sourceLineNo">150</span>   * Returns a predicate that evaluates to {@code true} if any one of its<a name="line.150"></a>
<span class="sourceLineNo">151</span>   * components evaluates to {@code true}. The components are evaluated in<a name="line.151"></a>
<span class="sourceLineNo">152</span>   * order, and evaluation will be "short-circuited" as soon as a<a name="line.152"></a>
<span class="sourceLineNo">153</span>   * true predicate is found. It defensively copies the array passed in, so<a name="line.153"></a>
<span class="sourceLineNo">154</span>   * future changes to it won't alter the behavior of this predicate. If {@code<a name="line.154"></a>
<span class="sourceLineNo">155</span>   * components} is empty, the returned predicate will always evaluate to {@code<a name="line.155"></a>
<span class="sourceLineNo">156</span>   * false}.<a name="line.156"></a>
<span class="sourceLineNo">157</span>   */<a name="line.157"></a>
<span class="sourceLineNo">158</span>  public static &lt;T&gt; Predicate&lt;T&gt; or(Predicate&lt;? super T&gt;... components) {<a name="line.158"></a>
<span class="sourceLineNo">159</span>    return new OrPredicate&lt;T&gt;(defensiveCopy(components));<a name="line.159"></a>
<span class="sourceLineNo">160</span>  }<a name="line.160"></a>
<span class="sourceLineNo">161</span><a name="line.161"></a>
<span class="sourceLineNo">162</span>  /**<a name="line.162"></a>
<span class="sourceLineNo">163</span>   * Returns a predicate that evaluates to {@code true} if either of its<a name="line.163"></a>
<span class="sourceLineNo">164</span>   * components evaluates to {@code true}. The components are evaluated in<a name="line.164"></a>
<span class="sourceLineNo">165</span>   * order, and evaluation will be "short-circuited" as soon as a<a name="line.165"></a>
<span class="sourceLineNo">166</span>   * true predicate is found.<a name="line.166"></a>
<span class="sourceLineNo">167</span>   */<a name="line.167"></a>
<span class="sourceLineNo">168</span>  public static &lt;T&gt; Predicate&lt;T&gt; or(<a name="line.168"></a>
<span class="sourceLineNo">169</span>      Predicate&lt;? super T&gt; first, Predicate&lt;? super T&gt; second) {<a name="line.169"></a>
<span class="sourceLineNo">170</span>    return new OrPredicate&lt;T&gt;(Predicates.&lt;T&gt;asList(<a name="line.170"></a>
<span class="sourceLineNo">171</span>        checkNotNull(first), checkNotNull(second)));<a name="line.171"></a>
<span class="sourceLineNo">172</span>  }<a name="line.172"></a>
<span class="sourceLineNo">173</span><a name="line.173"></a>
<span class="sourceLineNo">174</span>  /**<a name="line.174"></a>
<span class="sourceLineNo">175</span>   * Returns a predicate that evaluates to {@code true} if the object being<a name="line.175"></a>
<span class="sourceLineNo">176</span>   * tested {@code equals()} the given target or both are null.<a name="line.176"></a>
<span class="sourceLineNo">177</span>   */<a name="line.177"></a>
<span class="sourceLineNo">178</span>  public static &lt;T&gt; Predicate&lt;T&gt; equalTo(@Nullable T target) {<a name="line.178"></a>
<span class="sourceLineNo">179</span>    return (target == null)<a name="line.179"></a>
<span class="sourceLineNo">180</span>        ? Predicates.&lt;T&gt;isNull()<a name="line.180"></a>
<span class="sourceLineNo">181</span>        : new IsEqualToPredicate&lt;T&gt;(target);<a name="line.181"></a>
<span class="sourceLineNo">182</span>  }<a name="line.182"></a>
<span class="sourceLineNo">183</span><a name="line.183"></a>
<span class="sourceLineNo">184</span>  /**<a name="line.184"></a>
<span class="sourceLineNo">185</span>   * Returns a predicate that evaluates to {@code true} if the object being<a name="line.185"></a>
<span class="sourceLineNo">186</span>   * tested is an instance of the given class. If the object being tested<a name="line.186"></a>
<span class="sourceLineNo">187</span>   * is {@code null} this predicate evaluates to {@code false}.<a name="line.187"></a>
<span class="sourceLineNo">188</span>   *<a name="line.188"></a>
<span class="sourceLineNo">189</span>   * &lt;p&gt;If you want to filter an {@code Iterable} to narrow its type, consider<a name="line.189"></a>
<span class="sourceLineNo">190</span>   * using {@link com.google.common.collect.Iterables#filter(Iterable, Class)}<a name="line.190"></a>
<span class="sourceLineNo">191</span>   * in preference.<a name="line.191"></a>
<span class="sourceLineNo">192</span>   *<a name="line.192"></a>
<span class="sourceLineNo">193</span>   * &lt;p&gt;&lt;b&gt;Warning:&lt;/b&gt; contrary to the typical assumptions about predicates (as<a name="line.193"></a>
<span class="sourceLineNo">194</span>   * documented at {@link Predicate#apply}), the returned predicate may not be<a name="line.194"></a>
<span class="sourceLineNo">195</span>   * &lt;i&gt;consistent with equals&lt;/i&gt;. For example, {@code<a name="line.195"></a>
<span class="sourceLineNo">196</span>   * instanceOf(ArrayList.class)} will yield different results for the two equal<a name="line.196"></a>
<span class="sourceLineNo">197</span>   * instances {@code Lists.newArrayList(1)} and {@code Arrays.asList(1)}.<a name="line.197"></a>
<span class="sourceLineNo">198</span>   */<a name="line.198"></a>
<span class="sourceLineNo">199</span>  @GwtIncompatible("Class.isInstance")<a name="line.199"></a>
<span class="sourceLineNo">200</span>  public static Predicate&lt;Object&gt; instanceOf(Class&lt;?&gt; clazz) {<a name="line.200"></a>
<span class="sourceLineNo">201</span>    return new InstanceOfPredicate(clazz);<a name="line.201"></a>
<span class="sourceLineNo">202</span>  }<a name="line.202"></a>
<span class="sourceLineNo">203</span><a name="line.203"></a>
<span class="sourceLineNo">204</span>  /**<a name="line.204"></a>
<span class="sourceLineNo">205</span>   * Returns a predicate that evaluates to {@code true} if the class being<a name="line.205"></a>
<span class="sourceLineNo">206</span>   * tested is assignable from the given class.  The returned predicate<a name="line.206"></a>
<span class="sourceLineNo">207</span>   * does not allow null inputs.<a name="line.207"></a>
<span class="sourceLineNo">208</span>   *<a name="line.208"></a>
<span class="sourceLineNo">209</span>   * @since 10.0<a name="line.209"></a>
<span class="sourceLineNo">210</span>   */<a name="line.210"></a>
<span class="sourceLineNo">211</span>  @GwtIncompatible("Class.isAssignableFrom")<a name="line.211"></a>
<span class="sourceLineNo">212</span>  @Beta<a name="line.212"></a>
<span class="sourceLineNo">213</span>  public static Predicate&lt;Class&lt;?&gt;&gt; assignableFrom(Class&lt;?&gt; clazz) {<a name="line.213"></a>
<span class="sourceLineNo">214</span>    return new AssignableFromPredicate(clazz);<a name="line.214"></a>
<span class="sourceLineNo">215</span>  }<a name="line.215"></a>
<span class="sourceLineNo">216</span><a name="line.216"></a>
<span class="sourceLineNo">217</span>  /**<a name="line.217"></a>
<span class="sourceLineNo">218</span>   * Returns a predicate that evaluates to {@code true} if the object reference<a name="line.218"></a>
<span class="sourceLineNo">219</span>   * being tested is a member of the given collection. It does not defensively<a name="line.219"></a>
<span class="sourceLineNo">220</span>   * copy the collection passed in, so future changes to it will alter the<a name="line.220"></a>
<span class="sourceLineNo">221</span>   * behavior of the predicate.<a name="line.221"></a>
<span class="sourceLineNo">222</span>   *<a name="line.222"></a>
<span class="sourceLineNo">223</span>   * &lt;p&gt;This method can technically accept any {@code Collection&lt;?&gt;}, but using<a name="line.223"></a>
<span class="sourceLineNo">224</span>   * a typed collection helps prevent bugs. This approach doesn't block any<a name="line.224"></a>
<span class="sourceLineNo">225</span>   * potential users since it is always possible to use {@code<a name="line.225"></a>
<span class="sourceLineNo">226</span>   * Predicates.&lt;Object&gt;in()}.<a name="line.226"></a>
<span class="sourceLineNo">227</span>   *<a name="line.227"></a>
<span class="sourceLineNo">228</span>   * @param target the collection that may contain the function input<a name="line.228"></a>
<span class="sourceLineNo">229</span>   */<a name="line.229"></a>
<span class="sourceLineNo">230</span>  public static &lt;T&gt; Predicate&lt;T&gt; in(Collection&lt;? extends T&gt; target) {<a name="line.230"></a>
<span class="sourceLineNo">231</span>    return new InPredicate&lt;T&gt;(target);<a name="line.231"></a>
<span class="sourceLineNo">232</span>  }<a name="line.232"></a>
<span class="sourceLineNo">233</span><a name="line.233"></a>
<span class="sourceLineNo">234</span>  /**<a name="line.234"></a>
<span class="sourceLineNo">235</span>   * Returns the composition of a function and a predicate. For every {@code x},<a name="line.235"></a>
<span class="sourceLineNo">236</span>   * the generated predicate returns {@code predicate(function(x))}.<a name="line.236"></a>
<span class="sourceLineNo">237</span>   *<a name="line.237"></a>
<span class="sourceLineNo">238</span>   * @return the composition of the provided function and predicate<a name="line.238"></a>
<span class="sourceLineNo">239</span>   */<a name="line.239"></a>
<span class="sourceLineNo">240</span>  public static &lt;A, B&gt; Predicate&lt;A&gt; compose(<a name="line.240"></a>
<span class="sourceLineNo">241</span>      Predicate&lt;B&gt; predicate, Function&lt;A, ? extends B&gt; function) {<a name="line.241"></a>
<span class="sourceLineNo">242</span>    return new CompositionPredicate&lt;A, B&gt;(predicate, function);<a name="line.242"></a>
<span class="sourceLineNo">243</span>  }<a name="line.243"></a>
<span class="sourceLineNo">244</span><a name="line.244"></a>
<span class="sourceLineNo">245</span>  /**<a name="line.245"></a>
<span class="sourceLineNo">246</span>   * Returns a predicate that evaluates to {@code true} if the<a name="line.246"></a>
<span class="sourceLineNo">247</span>   * {@code CharSequence} being tested contains any match for the given<a name="line.247"></a>
<span class="sourceLineNo">248</span>   * regular expression pattern. The test used is equivalent to<a name="line.248"></a>
<span class="sourceLineNo">249</span>   * {@code Pattern.compile(pattern).matcher(arg).find()}<a name="line.249"></a>
<span class="sourceLineNo">250</span>   *<a name="line.250"></a>
<span class="sourceLineNo">251</span>   * @throws java.util.regex.PatternSyntaxException if the pattern is invalid<a name="line.251"></a>
<span class="sourceLineNo">252</span>   * @since 3.0<a name="line.252"></a>
<span class="sourceLineNo">253</span>   */<a name="line.253"></a>
<span class="sourceLineNo">254</span>  @GwtIncompatible(value = "java.util.regex.Pattern")<a name="line.254"></a>
<span class="sourceLineNo">255</span>  public static Predicate&lt;CharSequence&gt; containsPattern(String pattern) {<a name="line.255"></a>
<span class="sourceLineNo">256</span>    return new ContainsPatternPredicate(pattern);<a name="line.256"></a>
<span class="sourceLineNo">257</span>  }<a name="line.257"></a>
<span class="sourceLineNo">258</span><a name="line.258"></a>
<span class="sourceLineNo">259</span>  /**<a name="line.259"></a>
<span class="sourceLineNo">260</span>   * Returns a predicate that evaluates to {@code true} if the<a name="line.260"></a>
<span class="sourceLineNo">261</span>   * {@code CharSequence} being tested contains any match for the given<a name="line.261"></a>
<span class="sourceLineNo">262</span>   * regular expression pattern. The test used is equivalent to<a name="line.262"></a>
<span class="sourceLineNo">263</span>   * {@code pattern.matcher(arg).find()}<a name="line.263"></a>
<span class="sourceLineNo">264</span>   *<a name="line.264"></a>
<span class="sourceLineNo">265</span>   * @since 3.0<a name="line.265"></a>
<span class="sourceLineNo">266</span>   */<a name="line.266"></a>
<span class="sourceLineNo">267</span>  @GwtIncompatible(value = "java.util.regex.Pattern")<a name="line.267"></a>
<span class="sourceLineNo">268</span>  public static Predicate&lt;CharSequence&gt; contains(Pattern pattern) {<a name="line.268"></a>
<span class="sourceLineNo">269</span>    return new ContainsPatternPredicate(pattern);<a name="line.269"></a>
<span class="sourceLineNo">270</span>  }<a name="line.270"></a>
<span class="sourceLineNo">271</span><a name="line.271"></a>
<span class="sourceLineNo">272</span>  // End public API, begin private implementation classes.<a name="line.272"></a>
<span class="sourceLineNo">273</span><a name="line.273"></a>
<span class="sourceLineNo">274</span>  // Package private for GWT serialization.<a name="line.274"></a>
<span class="sourceLineNo">275</span>  enum ObjectPredicate implements Predicate&lt;Object&gt; {<a name="line.275"></a>
<span class="sourceLineNo">276</span>    ALWAYS_TRUE {<a name="line.276"></a>
<span class="sourceLineNo">277</span>      @Override public boolean apply(@Nullable Object o) {<a name="line.277"></a>
<span class="sourceLineNo">278</span>        return true;<a name="line.278"></a>
<span class="sourceLineNo">279</span>      }<a name="line.279"></a>
<span class="sourceLineNo">280</span>    },<a name="line.280"></a>
<span class="sourceLineNo">281</span>    ALWAYS_FALSE {<a name="line.281"></a>
<span class="sourceLineNo">282</span>      @Override public boolean apply(@Nullable Object o) {<a name="line.282"></a>
<span class="sourceLineNo">283</span>        return false;<a name="line.283"></a>
<span class="sourceLineNo">284</span>      }<a name="line.284"></a>
<span class="sourceLineNo">285</span>    },<a name="line.285"></a>
<span class="sourceLineNo">286</span>    IS_NULL {<a name="line.286"></a>
<span class="sourceLineNo">287</span>      @Override public boolean apply(@Nullable Object o) {<a name="line.287"></a>
<span class="sourceLineNo">288</span>        return o == null;<a name="line.288"></a>
<span class="sourceLineNo">289</span>      }<a name="line.289"></a>
<span class="sourceLineNo">290</span>    },<a name="line.290"></a>
<span class="sourceLineNo">291</span>    NOT_NULL {<a name="line.291"></a>
<span class="sourceLineNo">292</span>      @Override public boolean apply(@Nullable Object o) {<a name="line.292"></a>
<span class="sourceLineNo">293</span>        return o != null;<a name="line.293"></a>
<span class="sourceLineNo">294</span>      }<a name="line.294"></a>
<span class="sourceLineNo">295</span>    };<a name="line.295"></a>
<span class="sourceLineNo">296</span><a name="line.296"></a>
<span class="sourceLineNo">297</span>    @SuppressWarnings("unchecked") // these Object predicates work for any T<a name="line.297"></a>
<span class="sourceLineNo">298</span>    &lt;T&gt; Predicate&lt;T&gt; withNarrowedType() {<a name="line.298"></a>
<span class="sourceLineNo">299</span>      return (Predicate&lt;T&gt;) this;<a name="line.299"></a>
<span class="sourceLineNo">300</span>    }<a name="line.300"></a>
<span class="sourceLineNo">301</span>  }<a name="line.301"></a>
<span class="sourceLineNo">302</span><a name="line.302"></a>
<span class="sourceLineNo">303</span>  /** @see Predicates#not(Predicate) */<a name="line.303"></a>
<span class="sourceLineNo">304</span>  private static class NotPredicate&lt;T&gt; implements Predicate&lt;T&gt;, Serializable {<a name="line.304"></a>
<span class="sourceLineNo">305</span>    final Predicate&lt;T&gt; predicate;<a name="line.305"></a>
<span class="sourceLineNo">306</span><a name="line.306"></a>
<span class="sourceLineNo">307</span>    NotPredicate(Predicate&lt;T&gt; predicate) {<a name="line.307"></a>
<span class="sourceLineNo">308</span>      this.predicate = checkNotNull(predicate);<a name="line.308"></a>
<span class="sourceLineNo">309</span>    }<a name="line.309"></a>
<span class="sourceLineNo">310</span>    @Override<a name="line.310"></a>
<span class="sourceLineNo">311</span>    public boolean apply(@Nullable T t) {<a name="line.311"></a>
<span class="sourceLineNo">312</span>      return !predicate.apply(t);<a name="line.312"></a>
<span class="sourceLineNo">313</span>    }<a name="line.313"></a>
<span class="sourceLineNo">314</span>    @Override public int hashCode() {<a name="line.314"></a>
<span class="sourceLineNo">315</span>      return ~predicate.hashCode();<a name="line.315"></a>
<span class="sourceLineNo">316</span>    }<a name="line.316"></a>
<span class="sourceLineNo">317</span>    @Override public boolean equals(@Nullable Object obj) {<a name="line.317"></a>
<span class="sourceLineNo">318</span>      if (obj instanceof NotPredicate) {<a name="line.318"></a>
<span class="sourceLineNo">319</span>        NotPredicate&lt;?&gt; that = (NotPredicate&lt;?&gt;) obj;<a name="line.319"></a>
<span class="sourceLineNo">320</span>        return predicate.equals(that.predicate);<a name="line.320"></a>
<span class="sourceLineNo">321</span>      }<a name="line.321"></a>
<span class="sourceLineNo">322</span>      return false;<a name="line.322"></a>
<span class="sourceLineNo">323</span>    }<a name="line.323"></a>
<span class="sourceLineNo">324</span>    @Override public String toString() {<a name="line.324"></a>
<span class="sourceLineNo">325</span>      return "Not(" + predicate.toString() + ")";<a name="line.325"></a>
<span class="sourceLineNo">326</span>    }<a name="line.326"></a>
<span class="sourceLineNo">327</span>    private static final long serialVersionUID = 0;<a name="line.327"></a>
<span class="sourceLineNo">328</span>  }<a name="line.328"></a>
<span class="sourceLineNo">329</span><a name="line.329"></a>
<span class="sourceLineNo">330</span>  private static final Joiner COMMA_JOINER = Joiner.on(",");<a name="line.330"></a>
<span class="sourceLineNo">331</span><a name="line.331"></a>
<span class="sourceLineNo">332</span>  /** @see Predicates#and(Iterable) */<a name="line.332"></a>
<span class="sourceLineNo">333</span>  private static class AndPredicate&lt;T&gt; implements Predicate&lt;T&gt;, Serializable {<a name="line.333"></a>
<span class="sourceLineNo">334</span>    private final List&lt;? extends Predicate&lt;? super T&gt;&gt; components;<a name="line.334"></a>
<span class="sourceLineNo">335</span><a name="line.335"></a>
<span class="sourceLineNo">336</span>    private AndPredicate(List&lt;? extends Predicate&lt;? super T&gt;&gt; components) {<a name="line.336"></a>
<span class="sourceLineNo">337</span>      this.components = components;<a name="line.337"></a>
<span class="sourceLineNo">338</span>    }<a name="line.338"></a>
<span class="sourceLineNo">339</span>    @Override<a name="line.339"></a>
<span class="sourceLineNo">340</span>    public boolean apply(@Nullable T t) {<a name="line.340"></a>
<span class="sourceLineNo">341</span>      // Avoid using the Iterator to avoid generating garbage (issue 820).<a name="line.341"></a>
<span class="sourceLineNo">342</span>      for (int i = 0; i &lt; components.size(); i++) {<a name="line.342"></a>
<span class="sourceLineNo">343</span>        if (!components.get(i).apply(t)) {<a name="line.343"></a>
<span class="sourceLineNo">344</span>          return false;<a name="line.344"></a>
<span class="sourceLineNo">345</span>        }<a name="line.345"></a>
<span class="sourceLineNo">346</span>      }<a name="line.346"></a>
<span class="sourceLineNo">347</span>      return true;<a name="line.347"></a>
<span class="sourceLineNo">348</span>    }<a name="line.348"></a>
<span class="sourceLineNo">349</span>    @Override public int hashCode() {<a name="line.349"></a>
<span class="sourceLineNo">350</span>      // add a random number to avoid collisions with OrPredicate<a name="line.350"></a>
<span class="sourceLineNo">351</span>      return components.hashCode() + 0x12472c2c;<a name="line.351"></a>
<span class="sourceLineNo">352</span>    }<a name="line.352"></a>
<span class="sourceLineNo">353</span>    @Override public boolean equals(@Nullable Object obj) {<a name="line.353"></a>
<span class="sourceLineNo">354</span>      if (obj instanceof AndPredicate) {<a name="line.354"></a>
<span class="sourceLineNo">355</span>        AndPredicate&lt;?&gt; that = (AndPredicate&lt;?&gt;) obj;<a name="line.355"></a>
<span class="sourceLineNo">356</span>        return components.equals(that.components);<a name="line.356"></a>
<span class="sourceLineNo">357</span>      }<a name="line.357"></a>
<span class="sourceLineNo">358</span>      return false;<a name="line.358"></a>
<span class="sourceLineNo">359</span>    }<a name="line.359"></a>
<span class="sourceLineNo">360</span>    @Override public String toString() {<a name="line.360"></a>
<span class="sourceLineNo">361</span>      return "And(" + COMMA_JOINER.join(components) + ")";<a name="line.361"></a>
<span class="sourceLineNo">362</span>    }<a name="line.362"></a>
<span class="sourceLineNo">363</span>    private static final long serialVersionUID = 0;<a name="line.363"></a>
<span class="sourceLineNo">364</span>  }<a name="line.364"></a>
<span class="sourceLineNo">365</span><a name="line.365"></a>
<span class="sourceLineNo">366</span>  /** @see Predicates#or(Iterable) */<a name="line.366"></a>
<span class="sourceLineNo">367</span>  private static class OrPredicate&lt;T&gt; implements Predicate&lt;T&gt;, Serializable {<a name="line.367"></a>
<span class="sourceLineNo">368</span>    private final List&lt;? extends Predicate&lt;? super T&gt;&gt; components;<a name="line.368"></a>
<span class="sourceLineNo">369</span><a name="line.369"></a>
<span class="sourceLineNo">370</span>    private OrPredicate(List&lt;? extends Predicate&lt;? super T&gt;&gt; components) {<a name="line.370"></a>
<span class="sourceLineNo">371</span>      this.components = components;<a name="line.371"></a>
<span class="sourceLineNo">372</span>    }<a name="line.372"></a>
<span class="sourceLineNo">373</span>    @Override<a name="line.373"></a>
<span class="sourceLineNo">374</span>    public boolean apply(@Nullable T t) {<a name="line.374"></a>
<span class="sourceLineNo">375</span>      // Avoid using the Iterator to avoid generating garbage (issue 820).<a name="line.375"></a>
<span class="sourceLineNo">376</span>      for (int i = 0; i &lt; components.size(); i++) {<a name="line.376"></a>
<span class="sourceLineNo">377</span>        if (components.get(i).apply(t)) {<a name="line.377"></a>
<span class="sourceLineNo">378</span>          return true;<a name="line.378"></a>
<span class="sourceLineNo">379</span>        }<a name="line.379"></a>
<span class="sourceLineNo">380</span>      }<a name="line.380"></a>
<span class="sourceLineNo">381</span>      return false;<a name="line.381"></a>
<span class="sourceLineNo">382</span>    }<a name="line.382"></a>
<span class="sourceLineNo">383</span>    @Override public int hashCode() {<a name="line.383"></a>
<span class="sourceLineNo">384</span>      // add a random number to avoid collisions with AndPredicate<a name="line.384"></a>
<span class="sourceLineNo">385</span>      return components.hashCode() + 0x053c91cf;<a name="line.385"></a>
<span class="sourceLineNo">386</span>    }<a name="line.386"></a>
<span class="sourceLineNo">387</span>    @Override public boolean equals(@Nullable Object obj) {<a name="line.387"></a>
<span class="sourceLineNo">388</span>      if (obj instanceof OrPredicate) {<a name="line.388"></a>
<span class="sourceLineNo">389</span>        OrPredicate&lt;?&gt; that = (OrPredicate&lt;?&gt;) obj;<a name="line.389"></a>
<span class="sourceLineNo">390</span>        return components.equals(that.components);<a name="line.390"></a>
<span class="sourceLineNo">391</span>      }<a name="line.391"></a>
<span class="sourceLineNo">392</span>      return false;<a name="line.392"></a>
<span class="sourceLineNo">393</span>    }<a name="line.393"></a>
<span class="sourceLineNo">394</span>    @Override public String toString() {<a name="line.394"></a>
<span class="sourceLineNo">395</span>      return "Or(" + COMMA_JOINER.join(components) + ")";<a name="line.395"></a>
<span class="sourceLineNo">396</span>    }<a name="line.396"></a>
<span class="sourceLineNo">397</span>    private static final long serialVersionUID = 0;<a name="line.397"></a>
<span class="sourceLineNo">398</span>  }<a name="line.398"></a>
<span class="sourceLineNo">399</span><a name="line.399"></a>
<span class="sourceLineNo">400</span>  /** @see Predicates#equalTo(Object) */<a name="line.400"></a>
<span class="sourceLineNo">401</span>  private static class IsEqualToPredicate&lt;T&gt;<a name="line.401"></a>
<span class="sourceLineNo">402</span>      implements Predicate&lt;T&gt;, Serializable {<a name="line.402"></a>
<span class="sourceLineNo">403</span>    private final T target;<a name="line.403"></a>
<span class="sourceLineNo">404</span><a name="line.404"></a>
<span class="sourceLineNo">405</span>    private IsEqualToPredicate(T target) {<a name="line.405"></a>
<span class="sourceLineNo">406</span>      this.target = target;<a name="line.406"></a>
<span class="sourceLineNo">407</span>    }<a name="line.407"></a>
<span class="sourceLineNo">408</span>    @Override<a name="line.408"></a>
<span class="sourceLineNo">409</span>    public boolean apply(T t) {<a name="line.409"></a>
<span class="sourceLineNo">410</span>      return target.equals(t);<a name="line.410"></a>
<span class="sourceLineNo">411</span>    }<a name="line.411"></a>
<span class="sourceLineNo">412</span>    @Override public int hashCode() {<a name="line.412"></a>
<span class="sourceLineNo">413</span>      return target.hashCode();<a name="line.413"></a>
<span class="sourceLineNo">414</span>    }<a name="line.414"></a>
<span class="sourceLineNo">415</span>    @Override public boolean equals(@Nullable Object obj) {<a name="line.415"></a>
<span class="sourceLineNo">416</span>      if (obj instanceof IsEqualToPredicate) {<a name="line.416"></a>
<span class="sourceLineNo">417</span>        IsEqualToPredicate&lt;?&gt; that = (IsEqualToPredicate&lt;?&gt;) obj;<a name="line.417"></a>
<span class="sourceLineNo">418</span>        return target.equals(that.target);<a name="line.418"></a>
<span class="sourceLineNo">419</span>      }<a name="line.419"></a>
<span class="sourceLineNo">420</span>      return false;<a name="line.420"></a>
<span class="sourceLineNo">421</span>    }<a name="line.421"></a>
<span class="sourceLineNo">422</span>    @Override public String toString() {<a name="line.422"></a>
<span class="sourceLineNo">423</span>      return "IsEqualTo(" + target + ")";<a name="line.423"></a>
<span class="sourceLineNo">424</span>    }<a name="line.424"></a>
<span class="sourceLineNo">425</span>    private static final long serialVersionUID = 0;<a name="line.425"></a>
<span class="sourceLineNo">426</span>  }<a name="line.426"></a>
<span class="sourceLineNo">427</span><a name="line.427"></a>
<span class="sourceLineNo">428</span>  /** @see Predicates#instanceOf(Class) */<a name="line.428"></a>
<span class="sourceLineNo">429</span>  @GwtIncompatible("Class.isInstance")<a name="line.429"></a>
<span class="sourceLineNo">430</span>  private static class InstanceOfPredicate<a name="line.430"></a>
<span class="sourceLineNo">431</span>      implements Predicate&lt;Object&gt;, Serializable {<a name="line.431"></a>
<span class="sourceLineNo">432</span>    private final Class&lt;?&gt; clazz;<a name="line.432"></a>
<span class="sourceLineNo">433</span><a name="line.433"></a>
<span class="sourceLineNo">434</span>    private InstanceOfPredicate(Class&lt;?&gt; clazz) {<a name="line.434"></a>
<span class="sourceLineNo">435</span>      this.clazz = checkNotNull(clazz);<a name="line.435"></a>
<span class="sourceLineNo">436</span>    }<a name="line.436"></a>
<span class="sourceLineNo">437</span>    @Override<a name="line.437"></a>
<span class="sourceLineNo">438</span>    public boolean apply(@Nullable Object o) {<a name="line.438"></a>
<span class="sourceLineNo">439</span>      return clazz.isInstance(o);<a name="line.439"></a>
<span class="sourceLineNo">440</span>    }<a name="line.440"></a>
<span class="sourceLineNo">441</span>    @Override public int hashCode() {<a name="line.441"></a>
<span class="sourceLineNo">442</span>      return clazz.hashCode();<a name="line.442"></a>
<span class="sourceLineNo">443</span>    }<a name="line.443"></a>
<span class="sourceLineNo">444</span>    @Override public boolean equals(@Nullable Object obj) {<a name="line.444"></a>
<span class="sourceLineNo">445</span>      if (obj instanceof InstanceOfPredicate) {<a name="line.445"></a>
<span class="sourceLineNo">446</span>        InstanceOfPredicate that = (InstanceOfPredicate) obj;<a name="line.446"></a>
<span class="sourceLineNo">447</span>        return clazz == that.clazz;<a name="line.447"></a>
<span class="sourceLineNo">448</span>      }<a name="line.448"></a>
<span class="sourceLineNo">449</span>      return false;<a name="line.449"></a>
<span class="sourceLineNo">450</span>    }<a name="line.450"></a>
<span class="sourceLineNo">451</span>    @Override public String toString() {<a name="line.451"></a>
<span class="sourceLineNo">452</span>      return "IsInstanceOf(" + clazz.getName() + ")";<a name="line.452"></a>
<span class="sourceLineNo">453</span>    }<a name="line.453"></a>
<span class="sourceLineNo">454</span>    private static final long serialVersionUID = 0;<a name="line.454"></a>
<span class="sourceLineNo">455</span>  }<a name="line.455"></a>
<span class="sourceLineNo">456</span><a name="line.456"></a>
<span class="sourceLineNo">457</span>  /** @see Predicates#assignableFrom(Class) */<a name="line.457"></a>
<span class="sourceLineNo">458</span>  @GwtIncompatible("Class.isAssignableFrom")<a name="line.458"></a>
<span class="sourceLineNo">459</span>  private static class AssignableFromPredicate<a name="line.459"></a>
<span class="sourceLineNo">460</span>      implements Predicate&lt;Class&lt;?&gt;&gt;, Serializable {<a name="line.460"></a>
<span class="sourceLineNo">461</span>    private final Class&lt;?&gt; clazz;<a name="line.461"></a>
<span class="sourceLineNo">462</span><a name="line.462"></a>
<span class="sourceLineNo">463</span>    private AssignableFromPredicate(Class&lt;?&gt; clazz) {<a name="line.463"></a>
<span class="sourceLineNo">464</span>      this.clazz = checkNotNull(clazz);<a name="line.464"></a>
<span class="sourceLineNo">465</span>    }<a name="line.465"></a>
<span class="sourceLineNo">466</span>    @Override<a name="line.466"></a>
<span class="sourceLineNo">467</span>    public boolean apply(Class&lt;?&gt; input) {<a name="line.467"></a>
<span class="sourceLineNo">468</span>      return clazz.isAssignableFrom(input);<a name="line.468"></a>
<span class="sourceLineNo">469</span>    }<a name="line.469"></a>
<span class="sourceLineNo">470</span>    @Override public int hashCode() {<a name="line.470"></a>
<span class="sourceLineNo">471</span>      return clazz.hashCode();<a name="line.471"></a>
<span class="sourceLineNo">472</span>    }<a name="line.472"></a>
<span class="sourceLineNo">473</span>    @Override public boolean equals(@Nullable Object obj) {<a name="line.473"></a>
<span class="sourceLineNo">474</span>      if (obj instanceof AssignableFromPredicate) {<a name="line.474"></a>
<span class="sourceLineNo">475</span>        AssignableFromPredicate that = (AssignableFromPredicate) obj;<a name="line.475"></a>
<span class="sourceLineNo">476</span>        return clazz == that.clazz;<a name="line.476"></a>
<span class="sourceLineNo">477</span>      }<a name="line.477"></a>
<span class="sourceLineNo">478</span>      return false;<a name="line.478"></a>
<span class="sourceLineNo">479</span>    }<a name="line.479"></a>
<span class="sourceLineNo">480</span>    @Override public String toString() {<a name="line.480"></a>
<span class="sourceLineNo">481</span>      return "IsAssignableFrom(" + clazz.getName() + ")";<a name="line.481"></a>
<span class="sourceLineNo">482</span>    }<a name="line.482"></a>
<span class="sourceLineNo">483</span>    private static final long serialVersionUID = 0;<a name="line.483"></a>
<span class="sourceLineNo">484</span>  }<a name="line.484"></a>
<span class="sourceLineNo">485</span><a name="line.485"></a>
<span class="sourceLineNo">486</span>  /** @see Predicates#in(Collection) */<a name="line.486"></a>
<span class="sourceLineNo">487</span>  private static class InPredicate&lt;T&gt; implements Predicate&lt;T&gt;, Serializable {<a name="line.487"></a>
<span class="sourceLineNo">488</span>    private final Collection&lt;?&gt; target;<a name="line.488"></a>
<span class="sourceLineNo">489</span><a name="line.489"></a>
<span class="sourceLineNo">490</span>    private InPredicate(Collection&lt;?&gt; target) {<a name="line.490"></a>
<span class="sourceLineNo">491</span>      this.target = checkNotNull(target);<a name="line.491"></a>
<span class="sourceLineNo">492</span>    }<a name="line.492"></a>
<span class="sourceLineNo">493</span><a name="line.493"></a>
<span class="sourceLineNo">494</span>    @Override<a name="line.494"></a>
<span class="sourceLineNo">495</span>    public boolean apply(@Nullable T t) {<a name="line.495"></a>
<span class="sourceLineNo">496</span>      try {<a name="line.496"></a>
<span class="sourceLineNo">497</span>        return target.contains(t);<a name="line.497"></a>
<span class="sourceLineNo">498</span>      } catch (NullPointerException e) {<a name="line.498"></a>
<span class="sourceLineNo">499</span>        return false;<a name="line.499"></a>
<span class="sourceLineNo">500</span>      } catch (ClassCastException e) {<a name="line.500"></a>
<span class="sourceLineNo">501</span>        return false;<a name="line.501"></a>
<span class="sourceLineNo">502</span>      }<a name="line.502"></a>
<span class="sourceLineNo">503</span>    }<a name="line.503"></a>
<span class="sourceLineNo">504</span><a name="line.504"></a>
<span class="sourceLineNo">505</span>    @Override public boolean equals(@Nullable Object obj) {<a name="line.505"></a>
<span class="sourceLineNo">506</span>      if (obj instanceof InPredicate) {<a name="line.506"></a>
<span class="sourceLineNo">507</span>        InPredicate&lt;?&gt; that = (InPredicate&lt;?&gt;) obj;<a name="line.507"></a>
<span class="sourceLineNo">508</span>        return target.equals(that.target);<a name="line.508"></a>
<span class="sourceLineNo">509</span>      }<a name="line.509"></a>
<span class="sourceLineNo">510</span>      return false;<a name="line.510"></a>
<span class="sourceLineNo">511</span>    }<a name="line.511"></a>
<span class="sourceLineNo">512</span><a name="line.512"></a>
<span class="sourceLineNo">513</span>    @Override public int hashCode() {<a name="line.513"></a>
<span class="sourceLineNo">514</span>      return target.hashCode();<a name="line.514"></a>
<span class="sourceLineNo">515</span>    }<a name="line.515"></a>
<span class="sourceLineNo">516</span><a name="line.516"></a>
<span class="sourceLineNo">517</span>    @Override public String toString() {<a name="line.517"></a>
<span class="sourceLineNo">518</span>      return "In(" + target + ")";<a name="line.518"></a>
<span class="sourceLineNo">519</span>    }<a name="line.519"></a>
<span class="sourceLineNo">520</span>    private static final long serialVersionUID = 0;<a name="line.520"></a>
<span class="sourceLineNo">521</span>  }<a name="line.521"></a>
<span class="sourceLineNo">522</span><a name="line.522"></a>
<span class="sourceLineNo">523</span>  /** @see Predicates#compose(Predicate, Function) */<a name="line.523"></a>
<span class="sourceLineNo">524</span>  private static class CompositionPredicate&lt;A, B&gt;<a name="line.524"></a>
<span class="sourceLineNo">525</span>      implements Predicate&lt;A&gt;, Serializable {<a name="line.525"></a>
<span class="sourceLineNo">526</span>    final Predicate&lt;B&gt; p;<a name="line.526"></a>
<span class="sourceLineNo">527</span>    final Function&lt;A, ? extends B&gt; f;<a name="line.527"></a>
<span class="sourceLineNo">528</span><a name="line.528"></a>
<span class="sourceLineNo">529</span>    private CompositionPredicate(Predicate&lt;B&gt; p, Function&lt;A, ? extends B&gt; f) {<a name="line.529"></a>
<span class="sourceLineNo">530</span>      this.p = checkNotNull(p);<a name="line.530"></a>
<span class="sourceLineNo">531</span>      this.f = checkNotNull(f);<a name="line.531"></a>
<span class="sourceLineNo">532</span>    }<a name="line.532"></a>
<span class="sourceLineNo">533</span><a name="line.533"></a>
<span class="sourceLineNo">534</span>    @Override<a name="line.534"></a>
<span class="sourceLineNo">535</span>    public boolean apply(@Nullable A a) {<a name="line.535"></a>
<span class="sourceLineNo">536</span>      return p.apply(f.apply(a));<a name="line.536"></a>
<span class="sourceLineNo">537</span>    }<a name="line.537"></a>
<span class="sourceLineNo">538</span><a name="line.538"></a>
<span class="sourceLineNo">539</span>    @Override public boolean equals(@Nullable Object obj) {<a name="line.539"></a>
<span class="sourceLineNo">540</span>      if (obj instanceof CompositionPredicate) {<a name="line.540"></a>
<span class="sourceLineNo">541</span>        CompositionPredicate&lt;?, ?&gt; that = (CompositionPredicate&lt;?, ?&gt;) obj;<a name="line.541"></a>
<span class="sourceLineNo">542</span>        return f.equals(that.f) &amp;&amp; p.equals(that.p);<a name="line.542"></a>
<span class="sourceLineNo">543</span>      }<a name="line.543"></a>
<span class="sourceLineNo">544</span>      return false;<a name="line.544"></a>
<span class="sourceLineNo">545</span>    }<a name="line.545"></a>
<span class="sourceLineNo">546</span><a name="line.546"></a>
<span class="sourceLineNo">547</span>    @Override public int hashCode() {<a name="line.547"></a>
<span class="sourceLineNo">548</span>      return f.hashCode() ^ p.hashCode();<a name="line.548"></a>
<span class="sourceLineNo">549</span>    }<a name="line.549"></a>
<span class="sourceLineNo">550</span><a name="line.550"></a>
<span class="sourceLineNo">551</span>    @Override public String toString() {<a name="line.551"></a>
<span class="sourceLineNo">552</span>      return p.toString() + "(" + f.toString() + ")";<a name="line.552"></a>
<span class="sourceLineNo">553</span>    }<a name="line.553"></a>
<span class="sourceLineNo">554</span><a name="line.554"></a>
<span class="sourceLineNo">555</span>    private static final long serialVersionUID = 0;<a name="line.555"></a>
<span class="sourceLineNo">556</span>  }<a name="line.556"></a>
<span class="sourceLineNo">557</span><a name="line.557"></a>
<span class="sourceLineNo">558</span>  /**<a name="line.558"></a>
<span class="sourceLineNo">559</span>   * @see Predicates#contains(Pattern)<a name="line.559"></a>
<span class="sourceLineNo">560</span>   * @see Predicates#containsPattern(String)<a name="line.560"></a>
<span class="sourceLineNo">561</span>   */<a name="line.561"></a>
<span class="sourceLineNo">562</span>  @GwtIncompatible("Only used by other GWT-incompatible code.")<a name="line.562"></a>
<span class="sourceLineNo">563</span>  private static class ContainsPatternPredicate<a name="line.563"></a>
<span class="sourceLineNo">564</span>      implements Predicate&lt;CharSequence&gt;, Serializable {<a name="line.564"></a>
<span class="sourceLineNo">565</span>    final Pattern pattern;<a name="line.565"></a>
<span class="sourceLineNo">566</span><a name="line.566"></a>
<span class="sourceLineNo">567</span>    ContainsPatternPredicate(Pattern pattern) {<a name="line.567"></a>
<span class="sourceLineNo">568</span>      this.pattern = checkNotNull(pattern);<a name="line.568"></a>
<span class="sourceLineNo">569</span>    }<a name="line.569"></a>
<span class="sourceLineNo">570</span><a name="line.570"></a>
<span class="sourceLineNo">571</span>    ContainsPatternPredicate(String patternStr) {<a name="line.571"></a>
<span class="sourceLineNo">572</span>      this(Pattern.compile(patternStr));<a name="line.572"></a>
<span class="sourceLineNo">573</span>    }<a name="line.573"></a>
<span class="sourceLineNo">574</span><a name="line.574"></a>
<span class="sourceLineNo">575</span>    @Override<a name="line.575"></a>
<span class="sourceLineNo">576</span>    public boolean apply(CharSequence t) {<a name="line.576"></a>
<span class="sourceLineNo">577</span>      return pattern.matcher(t).find();<a name="line.577"></a>
<span class="sourceLineNo">578</span>    }<a name="line.578"></a>
<span class="sourceLineNo">579</span><a name="line.579"></a>
<span class="sourceLineNo">580</span>    @Override public int hashCode() {<a name="line.580"></a>
<span class="sourceLineNo">581</span>      // Pattern uses Object.hashCode, so we have to reach<a name="line.581"></a>
<span class="sourceLineNo">582</span>      // inside to build a hashCode consistent with equals.<a name="line.582"></a>
<span class="sourceLineNo">583</span><a name="line.583"></a>
<span class="sourceLineNo">584</span>      return Objects.hashCode(pattern.pattern(), pattern.flags());<a name="line.584"></a>
<span class="sourceLineNo">585</span>    }<a name="line.585"></a>
<span class="sourceLineNo">586</span><a name="line.586"></a>
<span class="sourceLineNo">587</span>    @Override public boolean equals(@Nullable Object obj) {<a name="line.587"></a>
<span class="sourceLineNo">588</span>      if (obj instanceof ContainsPatternPredicate) {<a name="line.588"></a>
<span class="sourceLineNo">589</span>        ContainsPatternPredicate that = (ContainsPatternPredicate) obj;<a name="line.589"></a>
<span class="sourceLineNo">590</span><a name="line.590"></a>
<span class="sourceLineNo">591</span>        // Pattern uses Object (identity) equality, so we have to reach<a name="line.591"></a>
<span class="sourceLineNo">592</span>        // inside to compare individual fields.<a name="line.592"></a>
<span class="sourceLineNo">593</span>        return Objects.equal(pattern.pattern(), that.pattern.pattern())<a name="line.593"></a>
<span class="sourceLineNo">594</span>            &amp;&amp; Objects.equal(pattern.flags(), that.pattern.flags());<a name="line.594"></a>
<span class="sourceLineNo">595</span>      }<a name="line.595"></a>
<span class="sourceLineNo">596</span>      return false;<a name="line.596"></a>
<span class="sourceLineNo">597</span>    }<a name="line.597"></a>
<span class="sourceLineNo">598</span><a name="line.598"></a>
<span class="sourceLineNo">599</span>    @Override public String toString() {<a name="line.599"></a>
<span class="sourceLineNo">600</span>      return Objects.toStringHelper(this)<a name="line.600"></a>
<span class="sourceLineNo">601</span>          .add("pattern", pattern)<a name="line.601"></a>
<span class="sourceLineNo">602</span>          .add("pattern.flags", Integer.toHexString(pattern.flags()))<a name="line.602"></a>
<span class="sourceLineNo">603</span>          .toString();<a name="line.603"></a>
<span class="sourceLineNo">604</span>    }<a name="line.604"></a>
<span class="sourceLineNo">605</span><a name="line.605"></a>
<span class="sourceLineNo">606</span>    private static final long serialVersionUID = 0;<a name="line.606"></a>
<span class="sourceLineNo">607</span>  }<a name="line.607"></a>
<span class="sourceLineNo">608</span><a name="line.608"></a>
<span class="sourceLineNo">609</span>  @SuppressWarnings("unchecked")<a name="line.609"></a>
<span class="sourceLineNo">610</span>  private static &lt;T&gt; List&lt;Predicate&lt;? super T&gt;&gt; asList(<a name="line.610"></a>
<span class="sourceLineNo">611</span>      Predicate&lt;? super T&gt; first, Predicate&lt;? super T&gt; second) {<a name="line.611"></a>
<span class="sourceLineNo">612</span>    return Arrays.&lt;Predicate&lt;? super T&gt;&gt;asList(first, second);<a name="line.612"></a>
<span class="sourceLineNo">613</span>  }<a name="line.613"></a>
<span class="sourceLineNo">614</span><a name="line.614"></a>
<span class="sourceLineNo">615</span>  private static &lt;T&gt; List&lt;T&gt; defensiveCopy(T... array) {<a name="line.615"></a>
<span class="sourceLineNo">616</span>    return defensiveCopy(Arrays.asList(array));<a name="line.616"></a>
<span class="sourceLineNo">617</span>  }<a name="line.617"></a>
<span class="sourceLineNo">618</span><a name="line.618"></a>
<span class="sourceLineNo">619</span>  static &lt;T&gt; List&lt;T&gt; defensiveCopy(Iterable&lt;T&gt; iterable) {<a name="line.619"></a>
<span class="sourceLineNo">620</span>    ArrayList&lt;T&gt; list = new ArrayList&lt;T&gt;();<a name="line.620"></a>
<span class="sourceLineNo">621</span>    for (T element : iterable) {<a name="line.621"></a>
<span class="sourceLineNo">622</span>      list.add(checkNotNull(element));<a name="line.622"></a>
<span class="sourceLineNo">623</span>    }<a name="line.623"></a>
<span class="sourceLineNo">624</span>    return list;<a name="line.624"></a>
<span class="sourceLineNo">625</span>  }<a name="line.625"></a>
<span class="sourceLineNo">626</span>}<a name="line.626"></a>




























































</pre>
</div>
</body>
</html>
